Yamatake HGC303, User Manual

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Operation Yamatake Corporation
3-40 Model HGC303 - Heat Value Gas Chromatograph
3-4 : Calibration
The device has already been calibrated at the factory but we recommend that you
recalibrate it with your own calibration gas to ensure the accuracy of analysis in the
following cases:
1 When the model HGC303 is newly installed.
2 When an unused model HGC303 is started up again.
3 At a calibration interval decided by the user.
(Recommended calibration cycle is every 6 months.)
4 After the model HGC303 has been repaired or its parts have been replaced.
3-4-1 : Calibration gas requirement
1 It is imperative that the composition of the calibration gas should resemble
the process gas.
If the process gas concentration is high and calibration was done using a low
concentration gas, the chance for error may increase.
2 The unit for calibration gas concentration should be mol%.
3 Methane gas should be contained in case of N2 calibration.